New Zealand is surrounded by oceans which extends up to 20km beyond the shoreline which results in an an area of ocean just as large as NZ itself.

If we started farming seaweed, our greenhouse gas balance would look very positive indeed, especially if we farm seaweed (asparagopsis armata) that can be fed to cows and reduces their Methane emissions by 90%!

This recent article on Stuff.co.nz looks at some of the broader possibilities for the use of seaweed in the battle to mitigate climate change while this article from Researchgate looks at the potential for seaweed to be used in methane reduction when feed to livestock.